Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
  • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
  • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
  • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
  • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
  • B29C66/5452—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other joining hollow bottoms to bottom of bottles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
  • B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
  • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
  • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
  • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
  • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
  • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D23/00—Details of bottles or jars not otherwise provided for
  • B65D23/001—Supporting means fixed to the container
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
  • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
  • B29C2049/2017—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements outside the article
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/17—Component parts, details or accessories; Auxiliary operations
  • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
  • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
  • B29C45/561—Injection-compression moulding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
  • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
  • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
  • B29C65/0672—Spin welding
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C66/00—General aspects of processes or apparatus for joining preformed parts
  • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
  • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
  • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
  • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
  • B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
  • B29K2067/04—Polyesters derived from hydroxycarboxylic acids
  • B29K2067/046—PLA, i.e. polylactic acid or polylactide
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2031/00—Other particular articles
  • B29L2031/712—Containers; Packaging elements or accessories, Packages
  • B29L2031/7158—Bottles

Definitions

• the invention relates to a blown plastic bottle.
• the invention relates in particular to a blown plastic bottle with a standing foot.
• Blown plastic bottles are known from practice, Here, from a preform, which is injection molded, a bottle is blown in a blow mold, by introducing air, while heating it, under high pressure into the pre-form, so that the pre-form is inflated and is pressed against the wall of a mold cavity of the blow mold. In this form, the bottle subsequently cools down.
• a bottle which is provided with a standing foot which is attached against the underside utilizing a hot melt.
• the bottle is blown from PET or a PET blend, while the standing foot is formed from, for instance, PC or PE. Recycling such a bottle, at least the material thereof, is hard and can only be done at relatively high costs.
• a bottle which has no standing foot.
• a bottle is provided with a specially formed bottom on which the bottle can stand.
• Such a shape involves, for instance, a pentaloid bottom which means that the bottom has five dents with intermediate lobes on which the bottle can stand.
• bottoms are known with more or fewer of such dents and lobes.
• Such a bottle can be manufactured from one material, for instance PET, and is thus better recyclable than the bottle with standing foot.
• a bottle according to this specification is characterized in that the bottle is formed from a plastic, as is a standing foot connected thereto, while the plastic of the bottle and the standing foot can be jointly recycled.
• the bottle and the standing foot are manufactured from the same plastic, while more particularly a mono-material bottle is obtained.
• a bottle according to this specification is characterized in that the bottle is formed from a plastic, as is a standing foot connected thereto, the bottle being connected to the standing foot by means of a welding technique or by means of a different technique wherein no material is added or material is added which is not different from the material of the bottle and/or the standing foot or at least can be recycled therewith for reuse.
• a bottle according to this specification is characterized in that the bottle is connected with the standing foot by a clamping connection, form locking or the like. Preferably, the bottle is then at least partly blown into the standing foot.
• a bottle according to the specification is characterized in that the bottle and the standing foot are manufactured from PET or a PET blend,
• Fig. 1 shows, in cross-sectional side view, a bottle with a standing foot
• Fig. 2 shows, in cross-sectional side view, a step in a method for the connection of a standing foot with a bottle
• Fig, 3 shows, in cross-sectional side view, an alternative apparatus a method for connecting a standing foot to a bottle; and Fig. 4 shows a bottle in partly cross sectional side view with a standing foot.
• material is understood to mean both a mono- material and a blend, unless expressly stated otherwise.
• the same material for the bottle and the standing foot is understood to mean at least but not exclusively that to that purpose, materials are used which are jointly recyclable, for reuse, or similar materials, for instance materials with the same chemical components or composition.
• reuse is at least understood to mean that the recycled material is suitable for use in production processes which are the same or comparable to those with which the bottle and/or the standing foot have been manufactured.
• the material is recyclable such that it can be used in the same material category as the original materials.
• the bottle and the standing foot are recyclable, without prior separation, for instance as material of which the bottle is manufactured, such as, for instance, PET in case the bottle 1 is manufactured therefrom.
• substantially, approximately or such relative terms are understood to mean at least but not exclusively that deviations of at least plus or minus ten percent, in particular at least plus or minus five per cent, more particularly at least plus or minus 2% of a respective given value or condition are possible within the invention
• a bottle according to this specification is preferably manufactured from a plastic pre-form such as customarily used, which pre-form is for instance injection molded. Then, the pre-form is placed in a blow mold and heated therein and inflated until it has it final form. Then, the bottle is cooled BO that it becomes form-retaining. It is taken from the blow mold and used further, for instance filled with a beverage and closed by a cap.
• the bottle On a bottom side, the bottle is provided with a separately formed standing foot which is fixedly connected to the bottle, in a manner to be described further. In one embodiment, this can be done in the blow mold. In an alternative embodiment, this can be done outside the blow mold.
• a bottle according to the specification is preferably manufactured from PET, a PET blend or laminated PET.
• the material from which the bottle is manufactured can comprise more than 50% by weight of PET, for instance more than 60% by weight. In one embodiment, the material comprises more than 70% by weight, more particularly more than 80% by weight, for instance more than 90% by weight.
• the bottle can comprise, for instance, 95% by weight or more of PET, based on the entire bottle, inclusively any foils and additions used therein and/or thereon such as, for instance, barrier layers against gas exiting and/or entering the bottle, protection against radiation, ageing, coloring and the like, scavengers for, for instance, O2 or CO2 and/or decorative layers and the like,
• the bottle can also consist of virtually 100% PET.
• the bottle is manufactured from food grade PET and/or "virgin" PET, which sometimes can be indicated as PET-I in a recycle symbol.
• a standing foot according to the specification, in the field of technology customarily indicated as bottom cap, is preferably manufactured from PET, a PET blend or laminated PET.
• the material from which the standing foot is manufactured can comprise more than 50 % by weight of PET, for instance more than 60% by weight. In one embodiment, the material comprises more than 70% by weight, more in particular more than 80% by weight, for instance more than 90% by weight.
• the standing foot can comprise, for instance, 95% by weight or more of PET, based on the entire standing foot, inclusive of any foils and additions used therein and/or thereon.
• the standing foot can also consist of virtually 100% PET.
• the standing foot can be manufactured at least partly, preferably substantially and more particularly completely from recycled PET.
• the bottle and the standing foot are preferably manufactured from the same material, PET being particularly advantageous owing to the high degree of recyclability.
• the bottle and/or the standing foot can be manufactured from other plastic materials, as long as jointly, these are recyclable in the same production process and yield a material with a purity of more than 60% by weight, in particular above 70% by weight, more particularly more than 60% by weight such as, for instance, more than 90% by weight and preferably more than 95% by weight.
• the recycled material is in a purity category maximal for the respective pla ⁇ tic.
• a bottle 1 with standing foot 2 is shown in a first embodiment, where, on the left hand side, a cross section is shown and, on the right hand side, an elevational view.
• This bottle 1 comprises a thin wall 3 of plastic, in particular PET, while the wall can be a monolayer wall (as shown) or a multilayer wall (not shown), provided with, for instance, one or more barrier layers, while for instance additions on or in the plastic can be provided, such as Oa and/or CO2 scavengers and the like, while the material of the bottle is still considered as mono-material.
• the bottle 1 is provided in a customary manner with a neck 4 on which for instance outer ⁇ crew thread 5 can be provided for placing a cap (not shown).
• the neck 4 can be provided with a collar 6 with which a pre-form 22 (as 9hown in Fig. 3) can be retained in a customary manner in a blow mold during blowing of the bottle 1 and which can furthermore simplify handling the bottle 1.
• the bottle can have any desired shape, also for instance without neck 4 and/or screw thread 5 and/or without collar 6.
• a bottom 7 is provided, integrally formed with the wall 3, which bottom 7 is formed substantially as a segment of a sphere, in particular as a hemisphere in this embodiment (dome- shaped). It could, for that matter, also have a different shape, as long as it fits completely or partly in the standing foot 2.
• the spherical form has the advantage that it offers an ideal pressure distribution, so that the wall 8 of the bottom 7 can be relatively thin, for instance have approximately the same thickness as the wall 3. Also, stresses in the bottom due to blister formation can thus be minimized, removed and/or optimized.
• the bottom 7 offers an additional advantage that a bottle 1 designed therewith can withstand relatively high pressures relatively well, for instance above atmospheric, without undesired deformations, also with relatively large volumes, for instance bottles with a content of 1.5 or 2 litres or more and/or with relatively small wall thicknesses, for instance smaller than the currently customary wall thicknesses for bottles suitable for carbonated beverages such as soft drinks and carbonated water.
• the bottom 7 as such has as a drawback that the bottle 1 cannot stand straight thereon. Furthermore, the appearance of the spherical bottom 7 can be perceived as inconvenient or unpleasant.
• the standing foot 2 covers the bottom 7 at least partly, at least in side view of the bottle 1, and can furthermore offer a standing surface 9 on which the bottle 1 can stand. As indicated, the standing foot 2 is preferably manufactured from the same material as the bottle 1. The standing foot 2 can be manufactured through injection molding.
• a method and/or apparatus in which in a mold at least one mold cavity is provided which has a movable wall part such that preferably, with substantially or completely closed mold, the plastic can be introduced into the mold cavity while the volume thereof is greater than that of the product to be formed, such as pre-form or standing foot, and can be moved during or preferably after introduction of the plastic so that the final product is substantially formed in that the mold cavity is brought in a form and volume which correspond with the product to be formed.
• the movement of the movable wall part is controlled such that in the mold, the temperature of the plastic, in particular adjacent a flow front thereof, is hardly if at all reduced, or increases even slightly, so that the fluidity is maintained or even improved, until the mold cavity is filled at least for the gTeater part.
• the temperature of the plastic, in particular of the flow front can then be held as close as possible to the injection temperature, preferably in a range between approximately 5 degrees Celsius above and below it, at least until all plastic ia introduced and more particularly until the entire mold cavity is filled. Thu ⁇ , for instance crystal formation in the plastic, in particular with PET, can be prevented or at least be minimized.
• Such apparatuses and methods are known from, for instance, WO03/039838 or WO04/O24416, These applications are included herein by reference, at least as to the molds, injection molding apparatuses and methods described therein.
• the standing foot 2 has a bottom part 10 and a wall part 11 connected to the bottom part 10 by a curved edge part 12.
• the edge part 12 substantially defines the standing surface 9.
• the bottom part 10 is for instance concave in the direction of the bottle 1, such that a middle part 13 thereof touches the apex 14 of the bottom 7 of the bottle 1.
• the wall part 11 has a longitudinal edge 15 which in assembled condition abuts against the wall 3 of the bottle 1, for instance adjacent the transition of the wall 3 and the bottom 7.
• the longitudinal edge 15 can be connected to the wall 3 of the bottle. Additionally or alternatively, the bottom part 10 can be connected to the bottom 7.
• each connection between the standing foot 2 and the bottle 1 is preferably obtained through a method in which no material is added, such as glue or hotmelt, because these impede or even render impossible recycling of the bottle and standing foot without polluted recycling material being obtained.
• a welding method such as ultrasonic welding, as schematically represented in Fig. 2, spin welding, pressure welding or other welding 1 techniques without material additions
• the or each connection can be obtained by adding material which can be recycled together with the bottle and the standing foot, such as, for instance, welding with the aid of a plastic welding rod, of the same plastic as the bottle and the standing foot.
• a bottle 1 can be disposed in a ⁇ tanding foot 2, for instance on a rotating platform 16, after which the bottle 1 and the standing foot 2 are rotated about the longitudinal axis 17 of the bottle, in the direction of arrow Pi. Then, for in ⁇ tance an ultrasonic welding head 18 is held near or against the longitudinal edge 15 and the wail 3, so that the plastic of the longitudinal edge 15 and/or the wall 3 are somewhat heated and fuse together, whereby they are connected to each other at least after cooling. In a comparable manner, other welding techniques can be utilized.
• biodegradable glue can be utilized for connecting the standing foot to the bottle, or a glue which upon heating to above the temperature of use or to near or above the melting temperature of the plastic burns or evaporates or disappears in another manner from the material to be recycled or disappears in a conventional washing process of PET to be recycled.
• a blow mold 20 is shown, in cross section, for forming a bottle 1.
• the mold 20 comprises two mold parts 2OA, 2OB which can be moved apart from a closed condition (as shown in Fig. 3) in the direction of the arrows P ⁇ and P3, so that the mold is opened and the mold cavity 21 is released for taking out a bottle 1 and/or placing a standing foot 2.
• a pre-form 22 is suspended from the collar 6, so that a body 23 projects into the mold cavity 21,
• hot air or another pressure fluid such as a gas or liquid
• a blow head (not shown) which can connect to the neck 4,
• the mold cavity 21 can, for instance prior to and/or during blowing, be heated, for instance through heating of the mold cavity, walls thereof or similar measures known per se.
• a standing foot 2 is placed on the bottom 24 of the mold cavity 21,
• the standing foot 2 ha ⁇ a bowl part 25 and a wall 26, interconnected by an edge part 27.
• partitions 28 are provided, for instance four (two in the plane of the drawing and two at right angles thereto), which are connected preferably centrally below the bowl part 25, and support the bowl part 25.
• the partitions 28 for that matter can also be omitted or a different number of partitions 28 can be provided or they can be placed differently.
• a grid of partitions can be provided,
• the purpose of the partitions can be support of the bowl part, in particular during blowing of the bottle 1, absorbing pressure in the bottle and/or providing improved rigidity of the standing foot, in particular with small wall thicknesses of the wall 26 and/or the bowl part 25.
• the standing foot 2 is manufactured in one piece from plastic, in particular the same plastic as the bottle, for instance through injection molding,
• the edge part 27 is designed such that it reaches slightly inwards in part and thus forms an undercut 29.
• the form can be selected such that the edge part 27 comprises a curved edge 30 having, on an inner side thereunder, a wall part 31 which is somewhat receded,
• the wall 32 thereof will become thinner and be pressed against the wall 33 of the mold cavity 21.
• the wall 32, and in particular the part of the pre-form forming the bottom 7 will then be blown into the standing foot 2, against the bowl part 25 thereof and against the undercut.
• a curved wall part 34 is then formed that encloses the edge part 27 and effects a form closure.
• the wall part 31 is moved outwards, below the edge 30, so that additional pressure stress is obtained and an even better confinement.
• a partial fusion of the material of the standing foot 2 and the bottle 1 can be obtained, so that a fixed connection is obtained, also when a ⁇ tanding foot according to for instance Fig. 1 is utilized.
• a bottle 1 with standing foot 2 is shown, formed, for instance, in a mold 20 according to Fig. 3, where on the left hand side, a partial cross section is shown and on the right hand side an elevational view.
• a standing foot 2 according to Figs. 3 and 4 where a bowl part 25 is utilized, the advantage is achieved that the bottom 7 of the bottle 1 can simply be suitably formed, such as spherical, while the pressure exerted during blowing can be absorbed by the bowl part 25 and optionally the partitions 28.
• pressure increase in the bottle 1 during use, for instance through temperature increase and through CO2 or other gas developing or ejdting, the pressure can be absorbed at least partly by the bowl part 25.
• one or more openings can be provided, through which the bottle 1 can be blown, so that it can comprise a widening under the bowl part so that an additional or alternative bonding can be obtained.
• a part of the bottom 7 can be blown through such an opening, whereupon the part reaching through the opening can be slightly upwardly flattened, forming a widening under the bowl part.
• the standing foot 2 in the mold cavity 21 can, at least partly, be cooled or at least be protected against heating to near or above the melting point
• the bottom 24 of the mold cavity 21 can be formed such that it supports the bowl part 25 completely or wholly for instance through raised portions on or of the bottom 24, so that this bowl part 25 and/or the bottom 1 can be designed to be, for instance, particularly thin, optionally without partitions, and can still withstand the blowing pressure when the bottle ia blown.
• the bowl part 25 can be omitted wholly or partly.
• a wall 3 and a bottom part 7 can be formed having the same wall thickness virtually all over. This is technically and economically advantageous.
• a minimum of material and weight is required for forming a pressure resistant bottle, also with volumes above for instance 1.5 or 2 litres, such as, for instance, approximately 3 to 5 litres or more, while furthermore the shape of the bottle is preserved to relatively high pressures, for instance more than approximately 1.3 bar, more particularly more than approximately 1.6 bar, such as, for instance, more than 2 bar or more than 4 bar, or at least with comparable pressures which can occur at room temperature or thereabove with carbonated beverages in closed bottles.
• a bottle 1 can be formed from a material that is the same as the material from which a standing foot connected to the bottle is formed, while the connection between the standing foot and the bottle is formed without using a hot melt or other bonding means which is not recyclable with the material mentioned, in particular in an economically and technically useful manner.
• the bottle and the standing foot are at least substantially manufactured from PET or PET blends.
• the bottle and/or the standing foot can have other forms and be blown in a differently built-up mold.
• the neck can be designed differently while furthermore, the bottle may have integrally formed parts such as a handle, surface profiles such as ribs, edges, faces and the like. Labels and sleeves can be provided, arranged or not arranged in the mold cavity,
• the standing foot can also be utilized with bottles that can be laid on the wall 3, while the standing foot (bottom cap) is provided only for cover and/or pressure absorption and can for instance be designed such that the bottle cannot stand thereon in a self-supporting manner.
• Combinations and permutations of parts of the embodiments shown are understood to fall within the invention.
• combinations and permutations of described connecting methods can be utilized within the invention.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Containers Having Bodies Formed In One Piece (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

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Citations (9)

• 2007
  • 2007-11-19 NL NL1034717A patent/NL1034717C2/nl not_active IP Right Cessation
• 2008
  • 2008-11-19 WO PCT/IB2008/054856 patent/WO2009066249A2/en active Application Filing

Patent Citations (9)

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